Adam, J. ; Galatyuk, Tetyana ; Seck, Florian
Hrsg.: STAR Collaboration (2019)
First Observation of the Directed Flow of D⁰ and D⁰ in Au+Au Collisions at √sNN = 200 GeV.
In: Physical Review Letters, 123 (16)
doi: 10.1103/PhysRevLett.123.162301
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We report the first measurement of rapidity-odd directed flow (v1) for D0 and ¯D0 mesons at midrapidity (|y|<0.8) in Au+Au collisions at √sNN=200 GeV using the STAR detector at the Relativistic Heavy Ion Collider. In 10–80% Au+Au collisions, the slope of the v1 rapidity dependence (dv1/dy), averaged over D0 and ¯D0 mesons, is −0.080±0.017(stat)±0.016(syst) for transverse momentum pT above 1.5 GeV/c. The absolute value of D0 meson dv1/dy is about 25 times larger than that for charged kaons, with 3.4σ significance. These data give a unique insight into the initial tilt of the produced matter, and offer constraints on the geometric and transport parameters of the hot QCD medium created in relativistic heavy-ion collisions.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Adam, J. ; Galatyuk, Tetyana ; Seck, Florian |
| Art des Eintrags: | Bibliographie |
| Titel: | First Observation of the Directed Flow of D⁰ and D⁰ in Au+Au Collisions at √sNN = 200 GeV |
| Sprache: | Englisch |
| Publikationsjahr: | 18 Oktober 2019 |
| Verlag: | APS Physics |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review Letters |
| Jahrgang/Volume einer Zeitschrift: | 123 |
| (Heft-)Nummer: | 16 |
| DOI: | 10.1103/PhysRevLett.123.162301 |
| Kurzbeschreibung (Abstract): | We report the first measurement of rapidity-odd directed flow (v1) for D0 and ¯D0 mesons at midrapidity (|y|<0.8) in Au+Au collisions at √sNN=200 GeV using the STAR detector at the Relativistic Heavy Ion Collider. In 10–80% Au+Au collisions, the slope of the v1 rapidity dependence (dv1/dy), averaged over D0 and ¯D0 mesons, is −0.080±0.017(stat)±0.016(syst) for transverse momentum pT above 1.5 GeV/c. The absolute value of D0 meson dv1/dy is about 25 times larger than that for charged kaons, with 3.4σ significance. These data give a unique insight into the initial tilt of the produced matter, and offer constraints on the geometric and transport parameters of the hot QCD medium created in relativistic heavy-ion collisions. |
| Zusätzliche Informationen: | Art.No.: 162301 |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Kernphysik 05 Fachbereich Physik > Institut für Kernphysik > Experimentelle Kernphysik 05 Fachbereich Physik > Institut für Kernphysik > Experimentelle Kernphysik > Untersuchung von Quark-Materie mit virtuellen Photonen |
| Hinterlegungsdatum: | 09 Nov 2023 10:10 |
| Letzte Änderung: | 11 Dez 2023 14:22 |
| PPN: | 513974180 |
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